Related by context. Frequent words. (Click for all words.) 52 lungs 50 muscles 50 throat 48 biceps 47 rib cage 47 testicles 46 ears 45 vagina 45 esophagus 45 jaw 45 lips 44 ligament 44 bladder 44 lung 44 tendons 44 ear 43 spine 43 nasal 43 brain 43 bowel 43 eyelids 43 rotator cuff 43 knee 42 airways 42 inner ear 42 tendon 42 aorta 42 breasts 41 cartilage 41 uterus 41 ligaments 41 aneurysm 41 kneecap 41 spinal cord 41 scar tissue 40 skin 40 tummy 40 forearm 40 ankles 40 nostrils 40 abdominal 40 vertebrae 40 muscle 40 Achilles tendon 40 sore throat 40 surgically 40 stomach 39 penis 39 gums 39 nipple 39 cheeks 38 colon 38 thighs 38 pancreas 38 spleen 38 hips 38 blood vessels 38 kidneys 38 quadriceps 38 intestines 38 ovaries 38 ankle 38 bone 38 internal organs 38 legs 38 thyroid 38 abdomen 37 groin 37 airway 37 elbow 37 bark 37 facial 37 beak 37 pelvic 37 neck 37 upper lip 37 emphysema 37 hernia 37 limbs 37 pelvis 37 arteries 36 insides 36 wrists 36 brains 36 liver 36 heart 36 nerve 36 intestine 36 knuckle 36 wrist 36 knees 36 sing 36 undergo surgery 36 tissues 35 teeth 35 ACL 35 spinal 35 voice 35 rib 35 prostate 35 joints